using mathematics
gatherin materials
drawing a conclusion
asking a problem
forming a hypothesis
observing and recording data
performing measurement
identifying a single test variables and controlling other variables
analazing the results of the experiment
knowing how to use a piece of equitment

any scientific investigation begings with......
then comes......
followed by the......which usually has six steps
1.
2.
3.
4.
5.
6.
7.
and finally.......